Zinnia provides several template tags based on inclusion_tag system to create some widgets in your website’s templates.
Display the latest entries.
Display the featured entries.
Display random entries.
Display popular entries.
Display entries similar to an existing entry.
Display an HTML calendar with date of publications.
Display the archives by month.
Display all the archives as a tree.
Display all the categories available.
Display all the published authors.
Display the latest comments.
Display the latest linkbacks.
Display the breadcrumbs for the pages handled by Zinnia.
Display the Gravatar image associated to an email, useful for comments.
The usage of the template argument allow you to reuse and customize the rendering of a template tag in a generic way. Like this you can display the same template tag many times in your pages but with a different form.